386 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.89. 



festly belongs to the genus Eucanthus (AncJiistrotos) , where the pres- 

 ent author has placed it. 



Taeniacanthus carcTiarise. — In the following year (1871) Sumpf 

 described the new genus Taeniacanthus, on whose cephalothorax 

 are found these same hooks which he calls ' ' Klammerhaken " and 

 says of them: 



Letztere liegen seitlicli iiber der Basis der hintem Antenne und erinnem durch 

 ihre Gestalt auffallend an die Haken, mit denen das Rostellum der Taenien bewaffnet 

 ist (p. 10). 



He then adds in the next sentence : 



An Gliedmassen sind am Cephalothorax folgende vorhanden. 



This is the only hint given as to the nature of the hooks and he 

 evidently does not regard them as appendages. 



This genus stands as he described it and proves to be a most 

 interesting and instructive one, since we find all the mouth-parts 

 in their normal position beside and behind the mouth, and in addition 

 the maxillary hooks opposite the bases of the second antennae. 



Bomolochus tetrodontis. — No more species bearing these maxillary 

 hooks were discovered until 1898, when Bassett-Smith described 

 Bomolochus triceros and B. tetrodontis, both new species. He repeated 

 Heller's errors, for his first species is a true Bomolochus, while the 

 second is so different that it must be placed with Heller's B. gracilis 

 in the new genus Irodes (see p. 390). Like Heller, Bassett-Smith has 

 never found the first maxillae in any species of either Ergasilus or 

 Bomolochus which he has examined. And like the German investi- 

 gator, he makes these maxillary hooks in tetrodontis the homologues 

 of the true maxillipeds (which he calls hamuli) in triceros. 



Bomolochus mursense. — In 1906 Brian described two new species 

 belonging to this subfamily; one he made the type of a new genus to 

 which he gave the name Anchistrotos; the other species which he 

 called mursense, was referred to the genus Bomolochus. 



Brian's Anchistrotos is apparently identical with the Eucanthus of 

 Glaus, described forty years before, but Brian's genus name must be 

 retained as already stated (p. 384). 



The second species, mursense, had been named by Richiardi in 1880, 

 but had never been described. Brian identifies all his specimens as 

 females; he does not find any maxillary hooks, and we may be 

 reasonably sure he would have detected them if present, since he 

 found them in Anchistrotos. But neither do they possess the charac- 

 teristic maxillipeds of Bomolochus females; on the contrary their 

 maxillipeds are very similar to those of Anchistrotos, and are in a 

 normal position behind the other mouth-parts. This species, there- 

 fore, can not be referred to either Bomolochus or Anchistrotos, but 

 must constitute a genus by itself, intermediate between the two. 



