OF WASHINGTON. 75 



canal as a mass, and with the Lamellibranchs to the mantel 

 lobes and their extensibility. In these cases we have, however, 

 an expression of structural features in the animal and this he 

 thinks to be the case even with the genus Spondyliaspis. He 

 would, therefore, accept names in this class. In cuttle-fishes, 

 for example, we have forms distinguished by the pen, which is 

 an excretion. He referred also to the Coprolites or fossil dung 

 of extinct animals as being in certain cases expressions of 

 structure. He thought that the subject of excreta has been too 

 much overlooked, and referred to the widely differing dung of 

 the domestic animals as an example. 



Mr. Schwarz stated that he would not recommend the erection 

 of genera upon larval cases, but he believes in using in diagnoses 

 every character, whether morphological or not, which can be 

 defined. Referring to excreta, he stated that Dr. Hagen had 

 made a very interesting collection of the excremental pellets of 

 Lepidopterous larvae, many of them being specially character 

 istic. 



Mr. Howard, referring to Signoret's error in considering 

 Inglisia synonymical with Spondyliaspis, said that he had in a 

 joint article with the late Dr. Riley unfortunately followed Sig 

 noret's error, and that Mr. Maskell, in his Aleyrodid paper 

 referred to by Mr. Schwarz, had evidently supposed that Dr. 

 Riley and the speaker were responsible for the suggestion of the 

 synonymy. Maskell apparently had overlooked Signoret's 1881 

 note. 



The following paper, by Mr. Chittenden, was read by title : 



ON THE PARASITES OF ADULT COLEOPTERA. 

 By F. H. CHITTENDEN. 



SARCOPHAGID PARASITE OF AN ADULT CARABID. 



During June of 1894, Mr. Theo. Pergande captured an adult 

 of the common carabid beetle, Scarites subterraneus, from 

 which soon afterward a living larva issued. For some reason 

 the parasite was not reared, although nearly a score of the beetles 

 were confined in a rearing-jar for this purpose. Mr. Pergande 

 was of the opinion that the parasite would not be so apt to be 

 found in beetles under stones as in those that might be taken in 



