ENTOMOLOGICAL SECTION. V 



morphus Sol., a genus represented in Texas and Mexico. The species has 

 never been observed in California by any recent collectors and its refer- 

 ence to that locality is as doubtful as the other species here recorded. 



No information is given of the source from which Menetries obtained 

 the above species, all the others described in the paper are truly Cali- 

 fornian, have definite localities and are credited to Wosnessensky. 



Tricrepiditis triangulicollis Motseh., Bull. Mosc. 1S59, iv, p. 367. 



This insect I have identified with Ischiodontus ferreus Lee. There 

 can be no doubt that Motschulsky was deceived in attributing lobes to 

 the first three tarsal joints, from the teudency of the brush of hairs 

 which terminates the first joint on the under side to form a pencil 

 simulating a lobe. The specimen is stated to be from California and 

 came to Motschulsky from Dupont. 



From the above notes it would appear that all the trouble with 

 doubtfully distributed genera had its origin in a small collection made 

 by Piccolomini and distributed by Dupont to his friends. It must be 

 evident to those acquainted with the distribution of species in our fauna 

 that Piccolomini collected in Texas some distance up the Rio Grande. 

 When it is remembered that the geography of that part of our continent 

 had in 1838 another political alliance, and that its subdivisions were 

 totally different from those of a few years later, it will be understood 

 why the locality " California" very correct at that time, conveys an 

 erroneous impression at the present. 



A similar geographical allowance must be made in the works of Say. 

 Many localities are given as "Missouri Territory,'' a sufficiently well 

 defined region to those who studied the geographies of thirty years ago. 

 At present the name is lost and many States and Territories now occupy 

 that region on the maps. 



Mr. E. T. Cresson presented the following tables to assist the student 

 in the separation of the species belonging to the genus 



EUCERCERIS Cress. 



Females. 

 Clypeus with side lobes produced into a large blunt conical tubercle, middle lobe 

 depressed; body yellow with fulvous markings. ...ca.iialicula.tus (Say). 

 Clypeus with side lobes flat or depressed, not protuberant. 

 Middle lobe of clypeus produced into a porrect spine. 



Abdomen ferruginous, with three apical segments black bicolor Cress. 



Abdomen ferruginous, with broad yellow bands above; wings fuscous. 



fulviccps Cress. 



Abdomen above black, with broad yellow hands: wings clear, with costal 



margin fuliginous rubripes Cress. 



