100 
MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
Grenier (Ann. Soe. Ent. France, 4 e s6rie, tome iv, pp. 137 to 140) has some observations on 
the traces of eyes in beetles reputed blind. Having found indications of eyes in Anophtlialmus, 
he examined the other blind beetles, and found in Aphgenops an excessively minute surface mark¬ 
ing the position of the visual organ. In Leptoderus, Adelops, etc., no trace of an eye can be 
detected, but in Glyptomerus cavicola there is a very small one, presenting no facets, but distin¬ 
guishable by its pale color. He suggests that in many cases the internal portions of the organs 
of vision may be sufficiently developed to enable these insects to perceive the faint rays of light that 
may find their way into the caverns; in others, however, it has been found that the visual nerves 
are either wantyig or rudimentary, indicating that the sense of sight can hardly be exercised by 
these. Further observations on the anatomy of this part of the nervous system in the blind 
beetles inhabiting dark caverns and ants’ nests are very desirable. 
Order Siphonaptefa. 
Bystricliopsylla oblusieeps (Bits ). Eyes absent. 
Typklopsylla octactenus (Kol.). 
Typklopsylla caucasica Tasch. (= Pulex typhlus Motscli., from Spalax typh lus). 
Typklopsylla assimilis Tasob. (? =Pulex talpce Boucbd). 
Typklopsylla gracilis Tasob. (? = P. talpce Bouchd, nec Curtis). Eyes absent or rudimentary. 
Order Dipteba. 
Family Folyctenidee. 
Euctenodes mirabilis Waterhouse. Allied to Sfcrebla. 
Order Hymenopteea. 
Family Chalcididse. 
Eupristina S. Saunders. The male has neither eyes nor ocelli, while the female has large eyes. 
Antkopkorabia fasciata and A. return Newport. While the females have normal compound eyes, in the males 
the compound eyes are reduced to a minute simple one, and the wings are rudimentary. The species live 
in the darkness of the cells of Anthophora. The males probably do not leave the cells to impregnate the 
female, which are active, going from one nest to another. (See Newport, Mem. Linn.. Soc., xxi, 81,82.) 
Ceratosolen Mayr. “Die Augen sehr klein Oder fehlend” (Mayr). 
Family Formicidee. 
Eciton (occasionally). (In these genera the workers alone are eyeless.) 
Typklatta. 
liomyrmex cceca (Smith). Eyes and ocelli wanting. 
Typklomyrmex. 
Syscia Bog. 
Amblypone Frichs. 
Mystriwm Bog. 
Myopone Bog. 
Strigmatomma Bog. 
Ponera. 
Anomma Shuck. 
Labidus .* 
Typhlopone Westw. Subterranean in their mode of life, like Termes (Mayr). 
Mliogmus Shuck.* 
JEnictm Shuck.* 
Diehthadia .* 
Dorylus F. 
Diehthadia Gerst. 
* Workers unknown, though supposed to be eyeless. “ I believe that Eciton is now supposed to comprise the 
workers of Labidus,” states Mr. L. O. Howard, who has materially aided me in completing this list of Hymenoptera. 
7 
