i 
RICERCHE SULLA VARIAZIONE DELL'« HYDROPHILUS », ECC. 1099 
mesosterno : 32,5,-33,-33,5g-(33,75)-34-34,53-35, — (18) Id. dello 
sterno: 92,-92,5,-93-93,5,-94,-(94,25)-94,53-95;-95,5:-96,-96,5, 
— (19) Lungh. massima dell’episterno : 45,59-463-46,53-47-47,54 
485-48,53 — (20) Diametro trasv. ant. del metasterno: 87,5- 
883--88,5,-89,-89.53-90;-90,5;-91,5,-923-93,-93,5: — (21) Diam. 
trasv. post. del metasterno: 103,5,-1043-104,5,-105,-106,-106,5,- 
107,5,-108;-108,53-109,-109,5,. 
Ehtra. (22) Larghezza massima dell’elitra: 84,-84,5,-85-5,- 
86,-86,53-87;-87,5;-883-88,5,-89,-90, — (23) Diametro obliquo 
massimo dell’elitra: 231,5,-232,-233,52-2343-234,53-(235)-235,5;- 
236,-236,59-237,-237,5,-238,51. 
Addome. (24) Diam. trasv. mass. del 2° segmento addomin.: 
122,-123,59-124,-1253-125,53-126,-(126,25)-126,5,-127;-127,52- 
128,-128,5,-129,-130,-130,5, — (25) Id. del 3° segmento: 107,- 
108,-108,5,-109-109,5,-1103-110,5,-111,-(111,25)-111,5,;-1123- 
113,-113,5,-114,-115,-115,5, — (26) Id. del 4° segmento: 84;- 
84,5,-85,-85,53-86,-86,53-87,-87,5,-883-89,-90,-91, — (27) Id. del 
5°segmento: 573-583-58,52-59,-59,5,-60;-60,5-61,-61,59-62,5,-635. 
Zampe posteriori. (28) Lunghezza dell’anca: 80,5,-823-82,53- 
83;-83,53-84,-84,5,-85,-85,5, — (29) Larghezza dell’anca: 21,5;- 
22-22,5-23,-23,5, — (30) Lunghezza del femore col trocantere: 
90,-90,5,-913-91,53-92,-92,5;-93-93,5:-94;-94,5;-95, — (31) Lar- 
ghezza del femore: 25,53-263-26,5,0-271-27,5; — (32) Lunghezza 
della tibia: 71,-71,53-72,-72,5;-783-73,54-743-74,53-75 — (33) Id. 
della spina infer.: 26,53-27,-27,5,-28,-(28,25)-28,5,-29,-30, -— 
(34) Id. della spina laterale interna: 39,53-403-40,5,-411-41,57- 
42,-42,53-433-43,5,-44,5, — (35) Id. del 2° articolo del tarso: 
37,51-38,51-394-39,53-(39,75)-40;-40,55-413-41,5,-42, — (86) Id. 
del 3° articolo: 143-14,59-159-15,53-16, — (37) Id. del 4°carti- 
colo: 11,5;-12;-(12,25)-12,5,-13. — (88) Id. del 5° articolo: 
17,5,-187-(18,25)-18,53-19%. 
Zampe mediane. (39) Lunghezza dell'anca: 44,-44,5,-451- 
45,55-(45,75)-465-46,5,-471-47,5: — (40) Id. del femore col tro- 
cantere: 71,-71,5,-72;-72,5:-78,-73,54-74,-74,5,-75, — (41) Id. 
della tibia : 48,5;-49,5,-503-(50,25)-50,5-51-51,5-52; — (42) Id. 
della spina inferiore: 19,5,-20,5,-211-21,53-22s-22,5,1 — (48) Id. 
della spina laterale interna: 22,5,-23,-23,53-24g-24,55-25,-25,5s 
— (44) Id. del 2° articolo del tarso : 313-31,5,-323-32,5-(32,75)- 
337-33,94-34,5, — (45) Id. del 8° art.: 13,53-14;-14,5,1-154-15,5, 
