diff --git a/src/particle/particle/particle.py b/src/particle/particle/particle.py
index c9c2f038..48cb576a 100644
--- a/src/particle/particle/particle.py
+++ b/src/particle/particle/particle.py
@@ -938,7 +938,7 @@ def describe(self) -> str:
 
     @property
     def evtgen_name(self) -> str:
-        "This is the name used in EvtGen."
+        "The particle name as used in EvtGen."
         return EvtGenName2PDGIDBiMap[self.pdgid]
 
     @property
@@ -948,7 +948,7 @@ def programmatic_name(self) -> str:
 
     @property
     def html_name(self) -> str:
-        "This is the name in HTML."
+        "The particle name in HTML."
         return latex_to_html_name(self.latex_name)
 
     @classmethod
diff --git a/tests/particle/test_particle.py b/tests/particle/test_particle.py
index 8be06795..b5ce7bae 100644
--- a/tests/particle/test_particle.py
+++ b/tests/particle/test_particle.py
@@ -397,9 +397,12 @@ def test_all_particles_are_loaded():
     (11, "e<SUP>-</SUP>"),  # e-
     (-13, "&#x03bc;<SUP>+</SUP>"),  # mu+
     (-14, "&#x03bd;&#773;<SUB>&#x03bc;</SUB>"),  # nu_mu_bar
+    (18, "&#x03bd;<SUB>&#x03c4;<SUP>&#8242;</SUP></SUB>"),  # nu_tau_prime
     (111, "&#x03c0;<SUP>0</SUP>"),  # pi0
     (-211, "&#x03c0;<SUP>-</SUP>"),  # pi-
     (-213, "&#x03c1;(770)<SUP>-</SUP>"),  # rho(770)-
+    (331, "&#x03b7;<SUP>&#8242;</SUP>(958)"),  # eta_prime
+    (335, "f<SUB>2</SUB><SUP>&#8242;</SUP>(1525)"),  # f2'(1525)
     (20213, "a<SUB>1</SUB>(1260)<SUP>+</SUP>"),  # a_1(1260)+
     (321, "K<SUP>+</SUP>"),  # K+
     (130, "K<SUB>L</SUB><SUP>0</SUP>"),  # K_L
@@ -415,6 +418,7 @@ def test_all_particles_are_loaded():
     (-2224, "&#x0394;&#773;(1232)<SUP>--</SUP>"),  # Delta_bar(1232)--
     (3322, "&#x039e;<SUP>0</SUP>"),  # Xi0
     (-3322, "&#x039e;&#773;<SUP>0</SUP>"),  # Xi0_bar
+    (4312, "&#x039e;<SUB>c</SUB><SUP>&#8242; 0</SUP>"),  # Xi_c'0
     (-5122, "&#x039b;&#773;<SUB>b</SUB><SUP>0</SUP>"),  # Lb0_bar
 )