56 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Occurs in the same places as pennsylvanica. Stonington, 25 

 June 5 July (J. A. Hyslop) ; New Haven, 19 April (B. H. 

 W.) ; 10 July (W. E. B.) ; Wallingford, 19 June (D. J. Caffrey). 



Blattella Caudell. 



Our single species of Blattella is much smaller than the in- 

 sects of the preceding genus. Body long and narrow ; pronotum 

 small and roundish, almost completely covering the head. Eyes 

 large. Antennae much longer than the body and thinly covered 

 with long hairs. Tegmina membranous or a little leathery and 

 as long or longer than the abdomen in both sexes. Sub-anal 

 plate of male with the styles rudimentary or wanting. Last ab- 

 dominal segment of female not notched. 



B. germanica Linn. Croton-bug. Water-bug. German Cock- 

 roach. Plate VII, 3. 



Color yellowish brown ; the females, as in most species, often 

 darker than the males. Legs lighter in color. Pronotum marked 

 longitudinally with two dark brown bands separated by a stripe 

 of yellow. Antennae dark brown, exceeding slightly the tips of 

 the tegmina, which reach to the end of abdomen (male) or some- 

 what pass it (female). The body of the female is shorter and 

 broader than that of the male. 



Measurements. 



Body Antennae Pronotum Tegmina 



Length Width 



Female 10 13 8. 4. n 



Male 13 14 2.5 3.25 9-10 



This is an introduced species and is commonly known as the 

 croton-bug from the fact that the species became numerous in 

 New York at the time of the completion of the Croton aqueduct. 

 The insects made their way along the pipes, entering houses 

 connected with this system. It is probably the most abundant 

 cockroach in Connecticut. While it is not so often met with 

 in the country, it is quite common in cities, and, as it is not 

 partial to filth, it is liable to infest any dwelling, especially one 

 heated with steam, and may become the plague of the most 

 careful housekeeper. It is usually confined to the kitchen and 

 pantry where food is found in abundance. The most effective 



